How does the falling film evaporator prevent fouling and maintain the stable operation of the equipment?

[Pharmaceutical Network Technical Article] Falling film evaporation has the advantages of high heat transfer coefficient and small heat transfer temperature difference
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Compared with other forms of evaporators, falling film evaporators have higher heat transfer coefficients, better heat transfer effects, and less one-time investment costs.
They are currently widely used in food, medicine, chemical industry, energy and other fields
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After years of development and technological advancement, falling film evaporators continue to meet the needs of the pharmaceutical and other industries, and their performance is constantly improving
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At present, there are various types of falling film evaporators on the market, and many manufacturers can provide customized services according to the needs of users to meet the actual needs of users
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It is worth mentioning that the evaporating tube of the falling film evaporator is generally prone to fouling and other problems, either light or heavy, which directly reduces the heat exchange efficiency of the falling film evaporator, and even makes it difficult for the equipment to operate normally, resulting in greater economical efficiency.
loss
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Therefore, how to prevent and descale the scale and maintain the stable operation of the equipment is the bottleneck that the industry enterprises need to crack
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 　　It is understood that the current measures to prevent scaling of evaporator equipment mainly include seed crystal method, scale inhibitor method, acid addition method, purification pretreatment method, solid-liquid ratio control method, etc.
Among them, pretreatment method is a common method to prevent scaling.
One of the methods, which adopts the hardness and alkalinity removal process, can remove calcium, magnesium ions, sulfate and carbonate ions in concentrated salt wastewater, and prevent the formation of calcium carbonate and calcium sulfate scaling
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By actively taking anti-fouling measures, enterprises can reduce the probability and speed of fouling in the evaporation tube of falling film evaporators to a certain extent
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 　　For falling film evaporators that have already been fouled, in order not to delay production tasks, companies generally need to take certain descaling measures
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A pharmaceutical machine person said that his company's tubular falling film evaporator will be shut down after a certain period of work, and cleaned according to different methods, such as the easy cleaning of the distribution plate scale and the cleaning of the heating surface structure
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"Because the liquid distribution pan of the tubular falling film evaporator is an open structure, when cleaning it, the operator can enter through the manhole and then clean it
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The cleaning of the heating surface structure is relatively simple and easy to operate, and the operator can pass the The upper and lower manholes enter the evaporator, and each heating tube is cleaned after opening the liquid distribution plate
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" The person said
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 　　The author has learned that, in view of the scaling problem of falling film evaporation, some domestic researchers have investigated the research status of domestic and foreign research on scale removal and anti-fouling and heat transfer enhancement technology, and actively explore the online anti-scaling and heat transfer enhancement methods of falling film evaporation tubes.
, in order to solve the problems of dry wall, tube wall scaling and film distributor blockage in the falling film evaporation process
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It is believed that with the birth of new technologies and new concepts in the future, the design scheme can be implemented, and the falling film evaporator with online cleaning function of anti-scaling will solve the troubles of anti-scaling and descaling of enterprises, improve the heat transfer coefficient of the equipment, and maintain the stability of the equipment.
run
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 　　For falling film evaporator companies, under the background of the continuous expansion of the application of falling film evaporators in various industries, enterprises can only obtain more development opportunities
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For example, in the case of rising costs and capacity expansion of production enterprises, falling film evaporators urgently need to speed up the transformation and upgrading towards automation and intelligence; for another example, when energy conservation and environmental protection prevail, reducing production energy consumption is the goal of all production enterprises.
Common pursuit, the falling film evaporator industry also urgently needs to reduce energy consumption output, enterprises need to strengthen innovative research and development, optimize equipment design, reduce equipment energy consumption, reduce costs, in order to meet the new needs of the market
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